– Lat/Long: 48.71° N 121.99° W
South Twin Sister Weather Forecast
Cascade Range · United StatesIssued: 4 pm Thu 15 Oct Local Time
Updates in:
Update imminent hr min s
Issued: 4 pm Thu 15 Oct Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–4 Weather SummaryModerate rain (total 11mm), heaviest on Sat morning. Warm (max 21°C on Thu afternoon, min 6°C on Sat night). Wind will be generally light. | Days 5–7 Weather SummaryMostly dry. Very mild (max 12°C on Sun afternoon, min 7°C on Tue morning). Wind will be generally light. | ||||||||||||||||
Thu 15 | Friday 16 | Saturday 17 | Sunday 18 | Monday 19 | Tuesday 20 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | |  |  | | | | |  | |  | | | | | |
clear | clear | some clouds | clear | light rain | rain shwrs | rain shwrs | clear | some clouds | some clouds | some clouds | some clouds | cloudy | some clouds | clear | clear | clear | |
Cloud base (m) | 9550 | 8600 | 3000 | 750 | 1650 | 6900 | 4350 | 3250 | 2800 | 2250 | 2200 | 2200 | 8950 | ||||
km/h | |||||||||||||||||
 |  |  |  |  |  | ||||||||||||
 cm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
mm | — | — | — | — | 1.9 | 9 | 0.1 | — | — | — | — | — | — | — | — | — | — |
max °C | 21 | 16 | 20 | 21 | 16 | 9 | 11 | 8 | 10 | 12 | 10 | 11 | 11 | 10 | 10 | 12 | 9 |
min °C | 21 | 15 | 16 | 19 | 10 | 9 | 10 | 6 | 6 | 11 | 8 | 8 | 11 | 8 | 7 | 11 | 8 |
chill °C | 21 | 15 | 16 | 19 | 9 | 8 | 10 | 6 | 6 | 11 | 7 | 8 | 11 | 8 | 7 | 11 | 8 |
Freezing level m | 4000 | 3800 | 3800 | 3600 | 3100 | 1800 | 1850 | 1850 | 2300 | 2550 | 2450 | 2100 | 2100 | 2100 | 1950 | 2150 | 2650 |
 | — | — | 7:28 | — | — | 7:30 | — | — | 7:31 | — | — | 7:33 | — | — | 7:35 | — | — |
 | 6:19 | — | — | 6:16 | — | — | 6:15 | — | — | 6:13 | — | — | 6:10 | — | — | 6:08 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Moderate rain (total 11mm), heaviest on Sat morning. Warm (max 21°C on Thu afternoon, min 6°C on Sat night). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
Mostly dry. Very mild (max 12°C on Sun afternoon, min 7°C on Tue morning). Wind will be generally light.
This table gives the weather forecast for South Twin Sister at the specific elevation of 500 m. Our advanced weather models allow us to provide distinct weather forecasts for several elevations of South Twin Sister. To see the weather forecasts for the other elevations, use the tab navigation above the table. For a wider overview of the weather, consult the Weather Map of Washington.